Lenze E94A - Manual (Page 630)

5 Function blocks
5.205 L_WndCalcDiameter - diameter calculation
630
Lenze · 9400 function library · Reference manual · DMS 6.7 EN · 08/2014 · TD05
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Outputs
bForceCalculation
BOOL
Forcing of the diameter calculation
FALSETRUE Forcing of the diameter calculation
• The next diameter calculation is carried out after the reel shaft
distance specified via dwCalculationDistance has been elapsed.
bHoldDiameter
BOOL
Hold last diameter value
TRUE The diameter value output last is not overwritten with new values.
bUnidirect
BOOL
Enable of only one direction of change and activation of the web break monitoring
TRUE Only the direction of change defined via bUnwindActive is enabled.
bUnwindActive
BOOL
Selection of the direction of change enabled
• Only in the case of bUnidirect = TRUE
FALSE Clockwise rotation (Cw)
TRUE Counter-clockwise rotation (Ccw)
bLoadSetDiameter
BOOL
Acceptance of the preselected initial value
• This input has a higher priority than the input bHoldDiameter.
TRUE Accept value at dnSetDiameter_n.
dnSetDiameter_n
DINT
Selection of an initial value/external diameter signal in [%]
• 100 % ≡ maximum diameter (dwMaxDiameter)
• Value is accepted by setting bLoadSetDiameter to TRUE.
dnDiameterRetain_n
DINT
Input for reading in the current diameter value after mains switching:
1.For this, connect the output dnDiameter_n with a retain variable.
2.Then connect the retain variable with this input.
Identifier/data type Value/meaning
dnState
DINT
Status (bit coded)
• Bits that are not listed have not been assigned with a status (always "0").
Status messages:
Bit 12 Diameter value was calculated/read from the memory.
Bit 13 Diameter value was initialised with dwMinDiameter.
Bit 14 Diameter value is/was loaded via bLoadSetDiameter/
dnSetDiameter_n.
Bit 15 Diameter value is/was held (bHoldDiameter).
Error messages:
Bit 29 Input value dwMinDiameter ≥ dwMaxDiameter.
Bit 30 Internal reset of the diameter calculation
(integration overflow by dnLineSpeed_n).
dwDiameter
DWORD
Current diameter in [μm]
• 1000 μm ≡ 1 mm; 1000000 μm ≡ 1 m
• Internal limitation to 10 m
• Display parameter: C04838
dnDiameter_n
DINT
Current diameter in [%]
• 100 % ≡ maximum diameter (dwMaxDiameter)
dnRecipDiameter_n
DINT
Reciprocal value of the current diameter in [%]
• 100 % ≡ minimum diameter (dwMinDiameter)
dnActualReelSpeed_s
DINT
Current reel speed in [rpm]
• 15000 rpm ≡ 2 26 ≡ 67108864
• The current reel speed results from the motor speed (dnActualMotorSpeed_s) and
the gearbox factor (dnGearNumerator/dnGearDenominator).
Identifier/data type Information/possible settings